If you’ve always wondered why “it’s pouring buckets” is “it’s raining cats and dogs” in English, here’s the French equivalent – “it’s pouring like a cow pees” (Il pleut comme vache qui pisse). However, I must say that in seven years I’ve never actually heard anyone use “cats and dogs” firsthand; people usually just say it’s pouring.
https://lemagdesanimaux.ouest-france.fr/dossier-1058-pleut-vache-pisse.html
Hi, I'm Rauf Aliev. 